Answer:
false
Explanation:
a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency.
Answer:
The speed of the flow of water in the river is 4 m/s.
Explanation:
Given that,
Speed of man = 5 m/s
If this man swims crosses a specific river his speed is 3 m/s.
If he takes the minimum time to cross the river
Let the speed of flow of water be
We need to calculate the speed of the flow of water in the river
Using formula for velocity
Where, = velocity of swimmer
= relative velocity
= velocity of river
Put the value into the formula
Hence, The speed of the flow of water in the river is 4 m/s.
Answer:
Endorphins
Explanation:
They are realeased in responce to stress or pain in the body
I'm not sure if this was exactly what you were looking for but hope it helped.
Answer:
B.
Explanation:
When equal forces are exerted onto eachother, they are exerting equal pressure since they are stationary.